To Minimize the Extent to Which Placebo Effects Contribute to Outcome

question 89

Multiple Choice

To minimize the extent to which placebo effects contribute to outcome differences between experimental and control groups in a drug-treatment study, researchers are likely to make use of

• A) random sampling.
• B) replication.
• C) operational definitions.
• D) the double-blind procedure.

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Definitions:

Ectotympanic

A bone in the middle ear of mammals that supports the eardrum.

Hind Limbs

The pair of posterior limbs found in various vertebrates, functioning in locomotion, support, and in some species, manipulation of objects.

Mammary Glands

Specialized organs in mammals responsible for producing milk to nourish newborns, a key trait for the class Mammalia.

Hemagglutinin Protein

A surface protein found on influenza viruses that facilitates their entry into host cells by binding to sialic acid receptors.